Fun with QR codes

But if you want to really get your QR code creative juices flowing, check out this post on Mental Floss. While you probably wouldn't want to go so far as tattoo attendees with a code linking to something fun and event-related, I can see t-shirt giveaways incorporate QR codes and logos, or make a piece of interactive art composed of QR codes linking to various bits of info about your organization. Oh the fun we could have...

Have you seen anyone do anything really interesting with these things at a conference?